Stella v4.7.3 changelog:
* Added preliminary support for the 3E+ bankswitching scheme, developed
by Thomas Jentzsch.
* Fixed HMOVE positioning bug that occurred under certain circumstances.
Thanks to Omegamatrix of AtariAge for the bug report and patch to fix
the issue.
* Added 'trapm', 'trapreadm', 'trapwritem' commands to debugger prompt.
These are similar to the non-'m' versions, except that they also trap
on all mirrors of the given address.
* Fixed bug in debugger 'reset' command; it wasn't resetting the
bankswitching, so after a reset the banks were in an undefined state.
* Updated UNIX configure script to fix a bug where it fails in
cross-compilation under certain circumstances. Thanks to Vlad
Zakharov for providing a patch to fix this issue.